JP2003535245A - Method of positioning externally actuated closing surface - Google Patents

Abstract

  (57) [Summary] The present invention relates to a method for contactlessly reaching an externally actuated window glass (1) of a motor vehicle to an upper stopper position (A) provided with a packing (5). When the upper edge (2) of the windowpane reaches the upper stop position (A), a control signal is generated by the control unit (26), whereby the electric drive is switched off in the shut-off position (11) p._a  And / or the driving direction of the driving device is reversed, so that the upper edge (2) of the windowpane stops at the stop position (10) p₀  To be stopped. When the window glass (1) approaches the stopper position (A), the system parameters (S₁... S_n) Is detected by the sensor (27) and stored in the memory (28). The system parameters (S₁... S_n) Associated with the system state SZ (S₁-S_n) Is the shut-off position (11) p_a  Along with the property field. In each case the current system state SZ_akt(S ₁-S_n) And the comparison system state SZ stored in the memory (28)._{vergl eich}(S₁-S_nA difference value is formed based on the comparison with (1). A new interruption position (11.1) p is associated with the determined deviation value ΔSZ._a  neu  Is calculated.   

Description

Detailed Description of the Invention

TECHNICAL FIELD: The present invention relates to a method of positioning a closure surface actuated by an external force. The use of electrically actuated wind lifters (slide regulators) and sliding roofs in vehicles of all kinds is increasing today. These wind lifter and sliding roof electric drives are responsible for the positive closing of the glazing or roof closing surface by sending it to a mechanical end position. Since the mechanical end position changes due to external influences, the time when the closed position is reached may shift.

BACKGROUND OF THE INVENTION In the case of externally actuated adjusting systems such as window regulator systems or sliding roof systems, it is absolutely essential to ensure that the surface to be closed is closed, so that the passenger compartment of a motor vehicle, for example, is a trespass. And reliably protected against theft. To this end, the closing system is moved to a mechanically restricted end position when closed. A low speed characteristic, a torque characteristic or a current characteristic is usually used as a breaking criterion. As soon as the set limit value for the defined time is exceeded, the electric drive of the surface to be closed is stopped. In order to ensure a reliable closure of the surface to be closed, however, the limit value must be chosen accordingly high. this is,
This results in high mechanical loads on components such as window regulators, doors, motors, etc., which necessitates a correspondingly high dimensional design and wear of said components.

Furthermore, in the case of window regulators that limit the closing force, an upper stop is used as a reference position. On the basis of this reference position, important data are identified, for example the protected area boundaries of the closed system 4 mm area as well as the 200 mm area. By repeating the actual reaching of the upper stop, this reference position is constantly followed within a certain tolerance range. Any resulting variations in the system mechanism are detected and tracked in this way.

For the application of electrical actuators for glazing surfaces or sliding roofs, one that must be considered today is that for weight reasons the sheet metal in the door or roof area used in the manufacture of car bodies is It is becoming thinner and thinner. Due to the mechanical blocking of the surface to be closed along the mechanical stop, the sheet metal surface is subjected to a clamping stress, which is very disadvantageous because the twist of the sheet metal surface is clearly visible from the outside. It will be triggered.

A method for positioning a component is disclosed on the basis of DE 195 27 456 A1. The position of the drive is detected and stored when the at least one end position is first reached. When the part next approaches the end position, the drive is stopped before reaching the end position, or the drive direction of the drive is reversed.

The technique described in DE 196 32 910 A1 relates to a method for contactlessly reaching an externally actuated windowpane of a motor vehicle to a lower stop position. The adjusting movement of the glazing by the drive is divided into two phases, during the second phase of the adjusting movement the expected rear mileage is based on the speed of movement of the glazing and / or the working voltage of the electric drive. Is calculated as

DISCLOSURE OF THE INVENTION The advantage obtained by the method of the invention is that the electric drive is stopped in order to reach the actual upper stop. Despite the early blockage, the certainty of closure of the surface to be closed is guaranteed. With the proposed method of the invention, the stresses on the electric drive as well as the mechanical components are reduced to an absolute minimum. This is because an unfavorable stress condition due to the closing surface, which hits the mechanical stopper without braking, is eliminated. This significantly increases the service life of the electrically actuatable closure system. Since the mechanical stresses on the closure system are now extremely reduced, it is also possible to design lighter weight components and components that realize the shifting movement. The disadvantageous temperature rise which limits the use of electric drives is likewise eliminated. This is because the drive is timely stopped and the electric drive is timely shut off before reaching the mechanical stop. The critical area, that is, the 4mm area just before reaching the mechanical stopper,
Calculated based on current system status and system data already obtained,
And in some cases adapted.

A new interruption position, which is derived by using the preceding interruption position each time,
By always recalculating in the method according to the invention, it is possible to ensure that the electric drive always remains stationary at a suitable time before the complete entry of the closing surface into the packing surrounding the closing surface.

[0009]   BEST MODE FOR CARRYING OUT THE INVENTION:   Next, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a window glass that has penetrated into the packing until it has virtually reached the current zero point.

The upper edge 2 of the closing surface 1 to be closed, which can be driven by an electric drive, for example the upper edge 2 of the window glass, enters a packing 5 fitted in a door frame 4 of the motor vehicle door. The upper edge 2 of the windowpane 1 is virtually located at the current zero point p ₂ . However, the physical zero p _{1 which} can only be reached by significantly deforming the packing 5 of the door is designated by 9.

The electric drive moves the closing surface 1, ie the window pane, in the direction of the arrow 8 into the entrance ramps 12, 13 provided on both sides of the outer surface 3 of the window pane. Arrow 11 indicates a shut-off position p _a, the electric drive of the window glass 1 in the blocking position, the upper edge 2 of the window glass 1 in a timely manner so as to ensure that closed is advanced into the gasket 5 of the door frame 4 Be stopped.

A reliable shut-off position 11 that guarantees a reliable closure of the closing surface 1 is empirically sought. The depth of penetration into the packing 5 which surrounds the closure surface 1 is, for example, the motor moment of the electric drive, the temperature, the packing geometry, the motor voltage, the window glass surface characteristics,
It is determined in relation to closure system parameters such as packing friction coefficient, system kinetic energy as well as door geometry. Based on these parameters, the penetration depth of the window glass 1 is empirically determined by one measurement series. This relation is stored in the computer as _a parameter field p _a (x, y, z) after the search, and can be always used as a reference value when the calculation must be performed later.

Depending on the detection method of the sensor 27 provided in the controller 26, the closing system parameter S of the closing system is detected and also stored. The closing system parameters to be determined are the voltage, the motor speed, the pulse width measurement and the temperature detection of the closing surface 1. Based on the penetration depth of the closed surface 1 detected in an empirical manner and the data on the system status detected by the sensor 27, it is possible to determine the real penetration depth by means of the stored system parameters. _{That: E x = f (p a} (S)) the shut-off position in relation to the values obtained for Real penetration depth _{E x} is obtained. That is: P _{x, 0} = f (E _x ) This shut-off position guarantees a reliable closure of the closure surface 1 and yet prematurely stops the electric drive so that the closure surface 1 to be closed is the actual mechanical surface. It is chosen to be stationary just before reaching the stopper 9. This avoids excessively high mechanical stresses in the drive components of the closure system.

When the closing system is adjusted with respect to the upper mechanical stop 9 consisting of the door packing 5 fitted in the sheet metal molding of the door frame 4, the required shut-off position p _{x, 0} is expected. As long as the deviation from the new shut-off position px _{, 1} lies within a settable tolerance range, the electric drive of the closing surface 1 is stopped when the shut-off position is reached.

The estimation of the new penetration depth is carried out by estimating the penetration depth expected by the currently measured system parameter S _akt and the finally stored system value S _Speicher .

Dp _x = p _a (S _akt ) −p _a (S _Speicher ) FIG. 2 shows a state in which the depth of penetration is increased and the closing surface is advanced into the packing.

Based on the above relationship for dp _x , the increased penetration depth is: dp _x > K
It becomes ₂ . In this case, reliable closure is preferred over mechanical relief of the closure system components. The shut-off position p _{x, 0} is calculated again in order to increase the closing certainty, and the electric drive is stopped when the shut-off position p _{x, 0} is reached. If the penetration depth is higher than the known zero position 10 as shown in FIG.
The electric drive of the surface to be closed is actuated until blocking. The system parameter S is stored and based on the system parameter a new stop position for the next adjustment is calculated. As can be seen from the illustration in FIG. 2, the upper edge 2 of the driven closing surface 1 has been pushed past the null position 10 into the packing 5. Figure 1
The upper edge 2 of the closing surface 1 is further advanced into the door packing 5 as compared with the state shown in FIG. It has become significantly smaller.

FIG. 3 shows the state of the closing surface that has entered the door packing 5 in the door frame 4 with the entry depth reduced.

Depending on the configuration of the system, reliable closure is preferred over mechanical offloading of the components or the closure system is optimized to care for the mechanical components. Reliable arrival at the closed position is ensured by the upper edge 2 of the closing surface 1 into the door packing.
As long as it is ensured by the intrusion of the system _, the rest position p _{x, 0} calculated each time in the preceding adjustment period is exceeded, the system parameter S is stored and the closure system is mechanical. Moved to the end position.

In this configuration, the upper edge 2 of the closing surface 1 is not located at the height of the zero position 10 but the blocking position 1
It is located at a stationary position px _{, 0} which is substantially parallel to 1. New shutoff position _{p x, 1} is indicated at 11.1. Since the upper edge 2 of the closing surface 1 does not completely penetrate into the door packing 5, a gap 7 formed between the rounded portion 6 of the door packing 5 and the upper edge 2 of the closing surface 1 is shown in FIG. It is larger than the size of the void.

By selecting and setting the parameter values of K, K ₁ and K _{2 in} a targeted manner, the closing behavior of the closed system is influenced in a targeted manner. Parameters K, K ₁ ,
K ₂ can be variable. If the vehicle is externally closed by actuation of the central locking device, the parameters are adjusted to ensure a reliable closure of all sides. If the windows are to be closed from inside the vehicle, it is possible to give priority to the mechanical reduction of the component over the reliable closing by choosing the values of the parameters K, K ₁ , K ₂ .

Mechanical fluctuations that occur during the service life of the closed system, such as play in the components, can affect the behavior of the wind lifter (wind regulator) or the like, or the transmission elements arranged therein, or the system behavior. Therefore, the mechanical stop is activated at a defined time interval and at the calculated rest position px _{, 0} the arrow 8
In order to brake the feed of the closing surface 1 in the direction of, the interruption of each electric drive is suppressed. This starting interval can be obtained empirically, and tracking of system changes is
It is determined based on the sum of the advanced adjustment distances of the closing surface 1. In addition to adopting the total adjustment distance advanced, it is also possible to adopt for the search the number of soft stops actuated so far, in short the desired timely interruption of the electric drive.

The closing system is thus operated relatively frequently initially to each mechanical end position 9 and, by increasing the number of adjustment cycles, such starting is reduced. On the contrary, in order to eliminate the play that occurs in the component parts of the closed system with increasing service life of the closed system, or to take account of said play when calculating each stop or shut-off position. It is also possible to start the mechanical end position 9 more frequently.

In FIG. 4, an interrogation / calculation routine which runs in a control unit containing at least one memory device is illustrated here for the lower stop of the closing surface 1.

After the start of the calculation routine for finding the soft stop suitable for the lower stopper that has started from the starting point 14, first the question 1 for the lower stopper position is given.
5 is performed. The lower stop position is known or can be determined by reference travel. If the lower stopper position is not known, the inquiry unit 24 branches to determine whether or not the lower stopper position has been reached. If it has reached, the lower stopper position is set as the current position in the parameter setting unit 25, and the provisional value is set to X. On the other hand, if the lower stopper is not reached, the operation routine branches at the terminal point 23.

From the question 15 as a starting point, a branch is made to the question unit 16 as to whether or not the descent is currently being performed. If this is not the case, a branch is made to the end position 23 until the next periodic invocation of the arithmetic routine at position 14.

When the lowering movement of the closing surface 1 is carried out, the difference value y resulting from the difference between the stored stopper position and the current stop position is determined. When an electric drive is connected (
This results from the interrogator 18), the difference value y is compared with the current provisional value. If the difference value y is smaller than the provisional value, the electric drive device is stopped, and if it is larger than the provisional value,
A branch is made from the provisional value comparison unit 19 to the termination unit 23 of the arithmetic routine.

When it is determined that the electric drive device is cut off based on the inquiry about the state of the electric drive device in the inquiry unit 18, provisional value corrections 21 and 22 are introduced, and this correction is calculated. This is done in element 22. At the time of the next downward movement, a new provisional value,
It is the basis for calculating the interception position. The blocking position is modified by periodic or aperiodic stopper abutment and / or stopper abrasion. This retrieves system-induced variations, such as mechanical component expansion variations or adjustment distance variations as described in connection with FIGS.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state of a window glass that has penetrated into a packing until a current zero point is virtually reached.

FIG. 2 is a cross-sectional view showing a state of the window glass which has increased the penetration depth and has entered the packing surrounding the window glass.

[Figure 3]   It is sectional drawing which shows the state of the window glass which entered with the penetration depth reduced.

FIG. 4 shows a calculation routine which is carried out in the control unit in order to determine a new blocking position for the electric drive of the surface to be closed.

[Explanation of symbols]

1 closed surface or window glass, 2 upper edge, 3 outer surface, 4 door frame,
5 packing, 6 physical zero or rounded portion, 7 void, 8
Driving direction arrow, 9 Physical zero point p ₁ , 10 Actual current zero point p ₂ , 11 Arrow indicating blocking position px _{, 0} , 12, 13 Entrance slope,
14 Start point, 15 Interrogation section for lower stopper position, 16
Inquiry section as to whether or not it is currently descending, 17 Difference value y between stored stopper position and current stop position, 18 Inquiry section for connection of drive device, 19
Provisional value comparison unit, 20 Drive device operation control unit, 21 Inquiry unit for system state, 22 Provisional value calculation routine, 23 Routine end point, 24
Question section for reaching the lower stopper, 25 parameter setting section, 2
6 control unit, 27 sensor, 28 a memory, A stopper position, _{p a} blocking position, S system parameters

─────────────────────────────────────────────────── ─── Continued front page    (81) Designated countries EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE, TR), OA (BF , BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, G M, KE, LS, MW, MZ, SD, SL, SZ, TZ , UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, C H, CN, CU, CZ, DE, DK, EE, ES, FI , GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, K Z, LC, LK, LR, LS, LT, LU, LV, MD , MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, S L, TJ, TM, TR, TT, UA, UG, US, UZ , VN, YU, ZA, ZW (72) Inventor Patrick Carless             Germany Bühl Castani             Embune wake 10 F-term (reference) 2E052 AA09 BA05 BA07 CA06 GB06                       GC01 KA16 LA01                 3D127 AA04 BB01 CB03 CB05 CC05                       CC08 DF03 FF08 FF09 FF19

Claims (16)

[Claims] 1. A method of contactlessly reaching an external force actuable window glass (1) of an automobile to a fixed upper stopper position (A) provided with a packing (5), said upper stopper position (A). When the upper edge (2) of the window glass reaches A), the control unit (2
6) generates a control signal, which cuts off the drive device at the shut-off position p _a (and / or changes the drive direction of the drive device) and makes the top edge (2) of the windowpane stand still at the zero point position p ₀ . In the format, when the window glass approaches the stopper position (A), the system parameter (S ₁ ... S _n ) is detected by the sensor (27) and stored in the memory (28), and the system parameter (S ₁ ... S _n ) is stored. blocking position the system state SZ _(S 1 -S _n) associated with (11) with _{p a} reading from the characteristic field, and each time instantaneous system state _{SZ akt (S 1 -S n)} , a memory (2
8) Comparison with the comparison system state SZ _vergleich (S ₁ -S _n ) stored in is performed to form a difference value and obtain the deviation value ΔSZ, and in relation to the obtained deviation value ΔSZ. A method for contacting a window glass to an upper stopper position in a non-contact manner, which comprises calculating _a new interruption position p _{a neu} . 2. A variable system parameter (S ₁ ...
S _n ), in particular motor torque, window temperature or packing ambient temperature, motor voltage, packing friction, system kinetic energy. 3. The method according to claim 1, wherein fixed system parameters (S ₁ ... S _n ) are set or can be set, in particular with respect to packing geometry, glass surface, door geometry and the like. . 4. The method as claimed in claim 1, wherein the penetration depth of the upper edge (2) of the window glass into the packing (5) is presented as a system state from a parameter field. 5. Zero point position (10) p ₀ reached by the window glass (1)
And the system state (S ₁ ... S _n ) in the previous field are empirically determined,
And storing the characteristic field p _a (S ₁ ... S _n ) in the memory (28).
The method described. 6. The method according to claim 1, wherein a voltage measuring device, a rotational speed measuring device, a pulse width measuring device, a temperature detecting device or the like is used as the sensor (27). 7. The zero point positions (10) p ₀ , p _{0 ′} are set to the current system parameters (S ₁ ... S _n ) and a characteristic field p _a (S ₁ ... S _n ) stored in the memory.
Method according to claim 1, characterized in that it is calculated by the control unit (26) on the basis of 8. The method according to claim 1, wherein the new blocking position (11.1) p _{a ′} is equal to the preceding blocking position (11) p _a if the deviation value Δp _a is present. 9. If the deviation value Δp _a is greater than zero and less than the tolerance limit value, the new shut-off position (11.1) p _{a ′} is the preceding shut-off position (11).
equal to p _a, method of claim 1. 10. The method according to claim 7, wherein the tolerance amount T corresponds to one half revolution to one revolution of the armature. 11. When controlling the glass edge (2) has over travel zero position (10) unit (26) detects the deviation value Delta] p _a is larger than zero, the method of claim 1, wherein . 12. When the deviation value Δp _a is smaller than the tolerance limit value T and larger than the reference limit value K ₂ , the glass upper edge (2) has a fixed stopper position (9) (
A) The vehicle is driven toward the stopper and is procked, and the stopper position (
9) The method according to claim 9, wherein the zero point position p _{2 '} is established again in relation to (A). 13. If the deviation value Δp _a is smaller than the tolerance limit value T and larger than the reference limit value K ₂ , the shut-off position (11) p _a is the new shut-off position (11).
． 10. The method according to claim 9, which is modified so that 1) p _{a '} is located closer to the fixed stop position (9) (A). 14. The deviation value Δp _a is greater than zero when the control unit (26) detects that the glass upper edge (2) has not reached the zero point position (10) p _0. The method described in 1. 15. When the deviation value Δp _a is larger than the tolerance limit value T and smaller than the first reference value R, the cut-off position (11) p _a is the new cut-off position (11).
． 13. The method according to claim 12, wherein 1) p _{a ′} is modified to be located further relative to the fixed stop position (9) (A). 16. If the deviation value Δp _a is larger than the first reference value R _{1 and} smaller than the second reference value R ₂ , the shut-off position (11) p _a is not modified and the window glass (1 13. The method according to claim 12, wherein the) is blocked by the packing (5).